Lu Xiaoxiao and Lin Yu were childhood friends. One day, as they were walking home from school and crossing the road, Lu Xiaoxiao saw Lin Yu looking down at his phone, oblivious to a car speeding toward them from the side. She rushed forward and pushed him out of the way, but was struck by the car and sent flying. From then on, she lay buried in the earth, never to wake again.
This became an unforgettable memory from Lin Yu's youth, as well as a knot in his heart.
If I hadn't been looking at my phone that day, would you still be here with me?
As the times advanced and technology developed, people in the 22nd century began researching time machines.
The inventor of the time machine was none other than Lin Yu, now a renowned, elderly scientist.
He thought that inventing a time machine would let him return to the past and save Lu Xiaoxiao, preventing the tragedy from happening.
But he never expected that transmigrating through time would trigger a chain of butterfly effects, putting the survival of humanity itself at stake...
